Cited as a reference

Replacing My Car Battery with Capacitors! 12V BoostPack Update

lasersaber

Why people recommend it

A hobbyist replaces a car battery with a supercapacitor pack; cited as proof it can start a car, with answerers noting it drains quickly with the engine off.

Watch for: the lithium hybrid version was damaged jump-starting a mower

In their words

Using supercapacitor as starter battery is fully feasible and was tried by enthusiasts in practice, see example.

Juraj on electronics.stackexchange.com, Nov 2016. CC BY-SA.

I'm interested building my own battery pack using a series of super capacitor, something like this:

Pennf0lio on electronics.stackexchange.com, Aug 2013. CC BY-SA.

There's examples on youtube such as this video which prove it works on cars.

alphasierra on electronics.stackexchange.com, May 2017. CC BY-SA.

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